[Bug middle-end/36802] New: pop_gimplify_context ICE using openmp task construct

[Bug middle-end/36802] New: pop_gimplify_context ICE using openmp task construct

[BlanchardJ at ieee dot org]

I get the following error when compiling using gcc snapshot 4.4.0 20080704

main.c|18|internal compiler error: in pop_gimplify_context, at gimplify.c:194

See code at the end of the post and gcc configure options.

Obviously when removing the -fopenmp switch the ICE go away. Also removing
either the omp task or omp single directive make the error go away. The ICE
also vanish if the expression inside the while loop is a constant.

This error appear at all optimization level with or without debugging enabled. 

using the following code (reduced case...) :

int main()
{
int i = 0;
#pragma omp parallel
{
    #pragma omp single
    while( i < 1 )
    {
        #pragma omp task
        i++;
    }
}
  return 0;
}

gcc configure options :
$ gcc -v
Using built-in specs.
Target: mingw32
Configured with: ./gcc-4.4.0/configure --prefix=/mingw --enable-bootstrap
--build=mingw32 --program-prefix= --with-as=/mingw/bin/as.exe
--with-ld=/mingw/bin/ld.exe --with-gcc --with-gnu-ld --with-gnu-as
--enable-languages=c,c++,objc,fortran --disable-nls --disable-win32-registry
--disable-werror --enable-sjlj-exceptions --enable-threads=win32
--disable-symvers --disable-libstdcxx-pch
--enable-version-specific-runtime-libs
--enable-cxx-flags='-fno-function-sections -fno-data-sections'
--enable-fully-dynamic-string --enable-libgomp --enable-checking=release
Thread model: win32
gcc version 4.4.0 20080704 (experimental) (GCC)


-- 
           Summary: pop_gimplify_context ICE using openmp task construct
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: BlanchardJ at ieee dot org
 GCC build triplet: i686-pc-mingw


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36802

[Bug middle-end/36802] pop_gimplify_context ICE using openmp task construct

[BlanchardJ at ieee dot org]

------- Comment #1 from BlanchardJ at ieee dot org  2008-07-11 03:15 -------
Created an attachment (id=15896)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15896&action=view)
preprocessed file of the presented testcase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36802

[Bug middle-end/36802] pop_gimplify_context ICE using openmp task construct

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2008-08-11 01:44 -------
Confirmed, this worked in 4.3.0.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
  GCC build triplet|i686-pc-mingw               |
           Keywords|                            |ice-on-valid-code
      Known to fail|                            |4.4.0
      Known to work|                            |4.3.0
   Last reconfirmed|0000-00-00 00:00:00         |2008-08-11 01:44:23
               date|                            |
   Target Milestone|---                         |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36802

[Bug middle-end/36802] [4.4 Regression] pop_gimplify_context ICE using openmp task construct

[jakub at gcc dot gnu dot org]

------- Comment #3 from jakub at gcc dot gnu dot org  2008-12-08 10:37 -------
Subject: Bug 36802

Author: jakub
Date: Mon Dec  8 10:36:01 2008
New Revision: 142546

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=142546
Log:
        PR middle-end/36802
        * omp-low.c (use_pointer_for_field): Only call maybe_lookup_decl
        on parallel and task contexts.

        * testsuite/libgomp.c/pr36802-1.c: New test.
        * testsuite/libgomp.c/pr36802-2.c: New test.
        * testsuite/libgomp.c/pr36802-3.c: New test.

Added:
    trunk/libgomp/testsuite/libgomp.c/pr36802-1.c
    trunk/libgomp/testsuite/libgomp.c/pr36802-2.c
    trunk/libgomp/testsuite/libgomp.c/pr36802-3.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/omp-low.c
    trunk/libgomp/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36802

[Bug middle-end/36802] [4.4 Regression] pop_gimplify_context ICE using openmp task construct

[jakub at gcc dot gnu dot org]

------- Comment #4 from jakub at gcc dot gnu dot org  2008-12-08 10:42 -------
Your testcase has data races, but I came up with valid testcases.


-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36802